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11.15.2008 at 02:32PM PST, ID: 23908262
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hardware peak/trough detector required; input analog signal output bits at time t signalling peak or trough. we seek a standalone box; not a chip

Asked by zatak in Math & Science, Miscellaneous Hardware, Embedded Hardware

We are engaged in a scientific experiment. humans oscillate their fingers, and we record this data. so far so good: we have an analog waveform from the finger movement that can be viewed with an oscilloscope. The signal is noisy, but we can low pass filter it.

We require a piece of hardware, preferably a standalone box (not a chip that we have to build a circuit from) that will emit a digital signal when there is a peak in the input timseries, and another digital; signal when there is a trough in the input time series.  Actually, the output signals themselves could be analog - it does not really matter.

SO: we record the input timeseries.
In parallell (and synchronously of course), we have a timeseries of peaks and troughs.

does anyone know of such a piece of hardware OR where to look to find one.

All I've found are chips; but our engineer is not such a reliable guy; we need this running quickly and what we would like is a standalone box.

Perhaps there are even people who will build us this box who we might contact?Start Free Trial
 
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[+][-]11.15.2008 at 04:19PM PST, ID: 22969135

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Zones: Math & Science, Miscellaneous Hardware, Embedded Hardware
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[+][-]11.15.2008 at 04:48PM PST, ID: 22969191

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[+][-]11.15.2008 at 06:14PM PST, ID: 22969364

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[+][-]11.15.2008 at 06:44PM PST, ID: 22969405

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[+][-]11.15.2008 at 07:26PM PST, ID: 22969496

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[+][-]11.18.2008 at 12:44PM PST, ID: 22988648

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[+][-]11.18.2008 at 01:45PM PST, ID: 22989243

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[+][-]11.20.2008 at 09:26AM PST, ID: 23005835

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[+][-]11.20.2008 at 10:41AM PST, ID: 23006698

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[+][-]11.20.2008 at 11:42AM PST, ID: 23007306

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[+][-]11.20.2008 at 12:01PM PST, ID: 23007489

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[+][-]11.20.2008 at 12:26PM PST, ID: 23007754

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[+][-]11.20.2008 at 01:38PM PST, ID: 23008589

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20081119-EE-VQP-49 - Hierarchy / EE_QW_EXPERT_20070906